Machine for skiving shoe stiffeners



July A, 1930. I H. HALLAM 1,768,685

' MACHINE FOR SKIVING SHOE STIFFENERS Filed June 28, 1927 3 Sheets-Sheet1 w Fig.1.

July 1, 1930. H; HALLAM ,7

MACHINE FOR SKIVING SHOE ST[FFENERS Filed June 28, 1927 5 Sheets-Sheet 2Fig. 2.

July 1, 1930'. H. HALLAM Q 1,768,685 MACHINE FOR SKIVII IG SHOESTIFFENERS Filed June 28, 1927 5 Sheets-Sheet 3 192 Fig. 3. 222

Patented July 1, 1930 HARRY HALLAIII, or Lnrons'rnn, ENGLAND, assrsnoRTO UNITED snon MAoEINERY ooRPoRATIoN, or PATER-SON, NEW JERsEY, ACORPORATION on NEW JERSEY MACHINE FOR sxrvme 's'RoE'srrIrrENnRsApplication filed June as, 1927-, Serial No. zoaornena in Great BritainJuly 9, 1926.

This invention relates to machines for skiving shoe stiffeners, forexample counters, toe pieces and similar articles, and is hereinillustrated as embodied in a skiving machine comprising an abrasivetool.

The operation of skiving shoe stiffeners to reduce the margins to a thinedge is commonly carried out by moving said stiffeners across the sharpedge of a knife blade. The means for presenting stiffeners to the knifeblade commonly involves a matrix shaped like the stifi'ener and intowhichthe stiffener is pressed as it is presented to the edge of theblade. Such machines require mechanism for pressing the stiffener intothe matrix in order to distort it so that the straight blade will beeffective to skive the 'stifieners. Moreover, inthe case of stiffenerblanks of leather board or fiber board, difliculty has been experiencedin properly skiving the blanks because of the tendency ofsuch materialto tear and peel under the action of the skiving tool.

In accordance with the present invention as herein exemplified, thestiffener blanks are supported in a plane'para llel to the plane of theactive surface of arotatable abrasive tool and the margins of the blanksare raised and moved into contact with the tool while it is rotated.Advantageously the end or radial face of a cylindrical grinding wheelmay be employed and a counter be supported in a matrix as relativemovement is eflected between the matrix and the grinding tool in a planeparallel-to the end face thereof, the stiffener being pressed into thematrix by the action of the grinding wheel. During the relative movementof the stiffener and the tool, one is progressively moved toward theother, thereby gradually and progressively cutting away a marginalportion of the stiffener.

One object of the present inventionis to provide an improvedskivingmachine in the use of which margins of shoe stiffeners may be beveled byabrading means in accordance with my novel method.

In accordance with the above-stated object, one feature of the inventionresides in a skiving machine utilizing a rotary abrasive tool forbeveling the margins of the shoe stifi'eners and in which a carrierhaving a matrix is provided for presenting stiffeners to the grindingwheel in a plane forming a large angle with the horizontal, theillustrated carrier being arranged in a substantially vertical planeparallel to the plane of the end surface of the grinding wheel. In oneform of the invention, the carrier has a series of matrices each ofwhich is provided with a low marginal rim for holding the stifieners inthe matrix as a relative traverse is produced between the grinding wheeland the matrix to present a stiffener to the abrasive action of thegrinding wheel. The construction and arrangement of the machine are suchthat the stiffener is distorted and its central portion pressed into thematrix by the resistance of the grinding wheel.

Another feature of the invention resides in an improved carrier in whichthe matrix-like recesses adapted to receive shoe stiffeners are providedwith movable bottoms and means are provided for moving the bottoms ofthe recesses during the movement of the carrier to present a stiffenerto the action'of the skiving mechanism such as a grinding wheel. Anotherfeature of the invention resides in a skiving maehine having a;rotatable grinding wheel with exposed end surface, in which machinemeans are provided for pre senting shoe stiffeners to said end surfacecomprising a mem ber rotatable about an axis parallel to the axis ofthegrindin'gwheel. As illustrated this member has its supporting surfaceopposed to and overlapping the end surfaceof the grinding wheel so thatthe stiffeners arecarried in acurv'ed path overlapping thepath ofmovement ofthe active surface of the grinding wheel which, if it is acup-shaped wheel, will comprise an an nular path;

In order that the illusi'zrated'machine may be substantially automaticin its operation, it is, in accordance with other features of theinvention, provided with a magaaine for supporting a stack of thestiffener blanks which stack is continually pressed into engagement withthe surface of the work-presenting carrier; As a recess in the carrierpasses the end of the magazine a blank is pressed into the recess whereit is supported by the engagement of the rim with its edges and iscarried on past the skiving mechanism. When, as previously mentioned,the carrier is provided with a movable bottom for the recess, then meansmay be provided for retracting said bottom to deepen the recess when itis opposite the magazine and for raising the bottom of the recess toraise the blank into engagement with the ski ving mechanism, and laterfor movin said bottom member still further to expel the blank from thecarrier. Cam-controlled driving mechanism is preferably provided for thecarrier so that it halts momentarily when the recess is in position forthe reception of a blank from the magazine, and, as illustrated,manuallyoperated devices are provided so that the control mechanism maybe rendered inoperative.

In the drawings Fig. 1 is a side elevation of an automatic skivingmachine constructed in accordance with my invention;

Fig. 2 is a plan view thereof;

Fig. 3 is a side elevation partly in section of a clutch and itscontrolling mechanism;

Fig. 4 is an end elevation of the mechanism shown in Fig. 3;

Fig. 5 is an elevation of a fragment of a blank-carrying wheel having amatrix-like recess;

Fig. 6 is a section on the line VI-V I of Fig. 5 showing the matrix-likebottom of the recess in elevated or blank ejecting position; and Fig. 7is an elevation of the end of the grinding wheel and one of themagazines showing in dotted lines the relation of the work carriers tosaid parts.

In general, the illustrated machine for skiving shoe stilfenerscomprises a cup-shaped grinding wheel 10 rotatable about a horizontalaxis and having an exposed end or radial face 12 to which shoe stifienerblanks, such as counters, are presented by means of carriers 14 and 16rotatable about axes parallel to the axis of the grinding wheel 10 andeach provided with matrix-like recesses 18, 18, blanks being supplied tothe recesses 18 from magazines 20, 20. The blanks are inserted in therecesses of the carriers at the to s thereof and are carried across theactive ace of the grinding wheel as indicated in Fig. 7 and expelledfrom the carriers at the bottoms. Since the carriers 14 and 16 in theirdriving and controlling mechanism are duplicates, a description of thecarrier 14 will suflice and it will be understood that the descriptionapplies equally well to the parts of the carrier 16.

The grinding wheel 10 is supported upon a shaft 22 mounted in bearings24 and 26 in a support 28 carried on a bed 30 which is secured to a base32. The grinding wheel 10 is rotated constantly during the operation ofthe machine by power applied through a driving pulley 34 mounted on theshaft 22. The position of the active face 12 of the grinding wheel maybe adjustably determined by means of a hand wheel 36 threaded on asleeve 38 which surrounds the shaft 22 and is held against end-wisemovement with respect thereto by the driving pulley 34 and a collar 40held upon the shaft 22 by a pin 42.

In order to avoid clogging the surface of the grinding wheel with therefuse material or dust cut from the blanks, I have provided grooves 44and 46 in the surface 12 which are disposed along lines tangential tothe inner circumference of the cup-shaped wheel. Any dust or othermaterial which accumulates in these grooves will be thrown outwardly bycentrifugal force as the wheel rotates in the direction of the arrow asin Fig. 7. Preferably, the grooves 44 extend across the active surfaceof the wheel 10 while the intermediate grooves 46, occupying a positionmidway of the segmental surfaces between two of the grooves 44, arearranged to extend only part way across the active face of the wheel.

Each magazine 20 holding a supply of blanks is supported on the machineby means of base members 50 bolted to the support 28 and furnishingmeans for the adjustable attachment of guides 52 and 54 which areprovided with slots 56 through which pass bolts 58 into the base members50. A stack 60 of blanks, here shown as counters or heel stiffeners,will be placed between the guides 52 and 54 and pressed into engagementwith the surface of the work carrier 14 by means of a presser head 62detachably secured to a socket member pinned to the end of the presserbar 66 which is guided in an arm 68 forming an extension of the basemember 50. The presser head 62 may tilt to compensate for uneventhickness in the blanks. It will be understood that the presser head 62is made detachable in order that suitable sizes and shapes may he usedin accordance with the size and shape of the particular pieces of workbeing treated. To even up the endmost blanks of the stock and thereby toinsure their correct presenta tion to the carriers 14 and 16, additionaloverhanging guides 70 are provided at the outlet of the magazine whichare adjustably secured to the guides 52 and 54 by means of screws 7 2passing through slots 74 (Fig. 1) in said guides. This presser head 62is continually urged against the stack 60 by means of a weight which isconnected to the presser bar 66 by a chain 82 passing over a pulley 84journaled in ears 86 upon the arm 68 and received within a groove 88 inthe lower face of the presser bar 66. A handle 90 is provided at the endof the presser bar 66 in order that it may be retracted for theinsertion of a stack of blanks and a latch 92 is pivoted on the arm 68and arranged for engagement in a notch 94 in the presser bar to hold thelatter 1';

in retracted position as shown at the left in Fig. 2.

The blank carrier 14 is provided with a plurality of recesses 18 shapedto correspond to the shape of the particular shoe stiffener which is tobe treated. The illustrated machine is arranged to handle shoe countersand accordingly the carrier 14 (Fig. 5) is provided with a detachablesegment 100 recessed at 102 in the shape of a shoe counter and therecess is provided with a movable bottom 104 constituting a matrix forholding the work. The edge of the'matrix depression is beveled from theedge of the bottom 104 ini wardly to the bottom of the depression toallowing the central portion of the counter to be received in the matrixand to be sub stantially untreated by the skiving mechanism. A pluralityof spurs 106 are provided in this movable bottom member 104 to assist inretaining the work in the matrix but it will be understood that thebottom member is cam-controlled, as will be later described, so that itis retracted when the recess is opposite to the magazine. This allowsthe endmost blank of the stack to be pushed into the recess by thepressure of the presser head 62 whereupon the engagement of the rim ofthe recess with the periphery of the counter will be sufficient to carrythe counter along in a plane parallel to the plane of the activegrinding surface 12 of the wheel 10. Each bottom piece 104 is providedwith a shank 108 extending through a sleeve-like extension 110 of theturret 14, and the shank 108 is provided at its outer end with a roller112 journaled upon a pin 114 extended laterally to form an abutment-toreceive the pressure of a spring 116 surrounding the extension 110 bymeans of which the bottom member 104 is normally retracted into therecess 102.

shaft 120 and fixed in the bearing 122 is a sleeve'128 which carries acam plate-130. The outer surface of the sleeve is threaded to providefor the end-wise adjustment of the cam plate by means of collars 132 and134 between which the cam plate 180 is rigidly held in fixed position.This allows the operator to adjust the machine so as to determine theamount of material which will be removed from the counter during a halfrevolution of the carrier 14. The cam plate 130 is provided with arecessed portion 136 allowing the retraction of the bottom member 104 bythe spring 116 so as to receive a counter from the magazine. As thecarrier moves forward to present the counter to the skiving mechanism,the roller 112 travels over a cam surface 138 which is arrangedprogressively to push the counter into engagement with the face of thegrinding wheel until the outer edge of the bottom member 104 is almostflush with the face of the carrier 14, and finally at the'bottom of thecam 130, the roller 112 engages an elevated surface 140 (Fig. 1) bymeans ofwhich the counter is expelled from 1 the carrier and allowed todrop into a suita- (F ble receptacle (not shown). It will be observedfrom an inspection of Fig. 7 that the leading end of the counter comesinto engagement with the face of the grinding wheel beforeit is entirelyrelieved from the pressure of the stack 60. It is then pushed againstthe grinding wheel with sufficient pressure so that the resistanceofiered by the grinding wheel distorts the counter and presses thecentral portion of the counter into the matrix of the bottom member sothat the action of the grinding wheel is principally on the edges of thecounter which are reduced to a thin edge determined by the rela tion ofthe bottom member 104 to the face 12 of the grinding wheel 10. It hasbeen found that the pressure with which the counter is held against thegrinding wheel, combined with the action of the spurs 106 and theupwardly extending edges of the matrix in the bottom member 104, issuflicient to retain the counter in the carrier even if the adjustmentof the cam 130 and of the grinding wheel 10 is such that the counter isskived to practically a knife edge and is, therefore, not held byengagement of its periphery with the margin of the recess 102. Theprogress of the counter along an arcshaped' path overlapping the annularpath of movement of the cup-shaped grinding wheel is'in a planeperpendicular to the axis of rotation of the grinding wheel.- Thismanner of presenting the shoe stiffener to the action of the grindingwheel has been found to be particularly effective in the case of shoestifleners which are made of leather board,

fiber board, andthe like which may be skived without tearing or peelingthe material.

The rotation of the work-carrying turret 14 to present the shoestiffener blanks to the skiving mechanism is such that the carrier isheld for a brief interval with its recess opposite to the magazine, isthen advanced steadily through a half revolution to carry the blank pastthe skiving mechanism and is then held for a short interval while thefirst blank is being ejected and a new blank is inserted inthe oppositerecess. It will be understood that although the particular mechanismherein described is laid out for use with a carrier provided with onlytwo recesses, it would require only slight changes in the mechanism tomake it effective for other arrangements involving a greater number ofrecesses in the carrier.

Power is supplied to effect the rotation of the carriers from a driveshaft 142 provided with tight and loose pulleys 144 and 146 (Fig. 1) anda hand wheel 148. The drive shaft 142 is provided with a gear 150 meshedwith a skew gear 152 loosely mounted on the meet ing ends (Fig. 3) of atwo-part transverse shaft 154 journaled in bearings 156 formed inbrackets 158 secured to the uprights of the supports 126 and this gear152 is adapted to be clutched at intervals to said crossshaft 154. Theshaft 154 is provided with worms 160 placed for engagement with wormgears 162 which are secured to the supporting shafts 120 of thecarriers. The endwise thrust of the worms 160 is taken up by means ofball thrust-bearings 164, one of which is shown at the left of Fig. 2.

The connection of the gear 152 to the crossshaft 154 is controlled bycams 166 formed upon the hubs of the gear 152 and by other cams 168formed upon the lateral surfaces of the gears 162. The illustratedarrangement is such that the shaft 120 supporting the blank carrier 14makes one revolution for each six revolutions of the cross-shaft 154 andonce during every revolution of the cross-shaft 154, the cam 166 permitsthe connection of the gear 152 to a corresponding half of thecross-shaft 154 and once during every half revolution of a work carrier,the cam 168 disconnects the clutch and stops the drive of thecorresponding half of the cross shaft 154. To this end, the gear 152 isprovided with outwardly extending hubs 170 (Figs. 3 and 4) each of whichis provided with a cam 166, having a projection 172 upon its peripheryand provided with a recess 174 in its lateral face in which there islocated a stud 176. Adjacent to the recessed face of the hub 170 is aclutch member 178 secured to the shaft by a key 180 and this clutchmember is provided with a sleeve extension 182 which is secured to theshaft by a key 184. Slidably mounted in these clutch members is a clutchbolt 186 provided with a recess 188 for engagement by the wedge-shapedend 190 of a member secured to the lower arm of a bell crank lever 192.When the bell crank lever 192, which is pivoted on a stud 194 secured inthe bracket 158, is tilted so that the wedge-shaped member 190 isbrought into the path of the clutch pin 186, then the clutch pin will bewithdrawn and carried out of engagement with the stud 176. When the bellcrank lever is tilted upwardly (counter clockwise in Fig. 4), then theclutch bolt 186 will be thrown by a spring 187 into engagement with thestud 176 to cause the gear 152 to drive the corresponding half of thecrossshaft 154. The above-described combination of a spring-urged clutchpin actuated by a wedge-shaped member is well known, and is disclosed inUnited States Letter Patent No. 958,303, granted May 17, 1910, to T. G.Plant,

and No. 1,011,903, granted Dec. 19, 1911, to Arthur Bates. The tippingof the bell crank lever 192 is effected by the projection 172 on the cam166 and to this end said lever is provided with a roller 196 ournaled ona rod 198 extending laterally from the lower arm of the lever 192. Thisroller is normally held in engagement with the cam 166 by means of aspring 200 (Fig. 4) underlying a lug 202 formed on said lever. Theupwardly extending arm of the bell crank lever 192 is also provided witha roller 204 for engagement with the cam surface 168 on the lateral faceof the gear 162. This surface 168 is provided with opposed and similardepressions 206 corresponding in position to and 90 degrees displacedfrom the recesses on the carrier 14.

Under the action of the mechanism ust described, the bell crank lever192 will be tilted. every time the gear 152 rotates by reason of theprojection on the cam 166 unless otherwise controlled and in so doingwill lift the wedge-shaped member 190 out of engagement with the clutchbolt and cause the correspond ing half of the cross-shaft 154 to bedriven, thereby to rotate the gear 162 and with it the carrier 14. Assoon as the gear 162 starts to rotate, however, the elevated surface 168on said gear will lift the roll 204 on the other arm of the bell cranklever 192 and hold the wedge 190 out of range of the clutch bolt untilthe turret has made a half revolution. The roll 204 will then drop inthe corresponding other depression 206 on the face of the gear 162 andthe timing is such that this will occur just after the projection 17 2on the hub of the gear 152 has passed the roller 196. The drivingconnection will thereby be interrupted and will not be made again untilthe gear 152 has made nearly a complete revolution. This allows plentyof time for the filling of the recess in the carrier from the stack inthe magazine.

lVhen the supply of blanks in the magazine has been used up, or when forany other reason, it is desired to stop the driving of a particularcarrier 14 or 16 without interrupting the operation of the rest of themachine, the mechanism shown in Figs. 3 and 4 is so arranged that theclutch may be thrown temporarily out of operation. To this end, a collar210 held on the sleeve 182 by screws 212 passing through slots in saidcollar may be given a partial rotation with respect to the sleeve 182and caused to hold the clutch bolt 186 in withdrawn position. The collar210 is provided with an operating handle 214 and with a projection 216for engagement in a notch 218 of the clutch bolt 186. Provision is alsomade for sliding the stud 198 which bolts the roller 196 laterally tocarry said roller out of range of the projection 172 on the cam 166.Accordingly, the stud 198 is provided with a handle 220 extending meaesethrough a slot in the lowerarm of'the lever 192. A spring-containedwithina projecting boss 222 engages a pointed plunger 224 whichcooperates with notches 226 in said stud 198 to hold the stud in eitherof the two described positions. The lateral withdrawal of the roller 196prevents the clutch from being closed as the cam rotates and the actionof the collar 210 in holding the clutch bolt 186 out of engagement withthe stud 176 permits the rotation of the carrier 14 by hand. Each halfof the cross-shaft 154 is provided with a squared end 230 (Fig. 2 toreceive a handle (not shown) by means of which the worm 160 may berotated to turn the gear 162 and with it the carrier 14.

In the use of the machine, the magazines 20 will be filled with stacks60 of shoe stiffener blanks which will be pressed against the faces ofthe carriers 14 and 16 by the weight-operated presser heads 62.Supposing that the drive shaft 142 and the shaft 22 carrying thegrinding wheel 10 are both in operation, the machine will rotate thework carriers intermittently to remove a blank from the correspondingmagazine, to carry it in an arc-shaped path past and overlapping theactive end orradial face of the skiving wheel, and to eject the blankfrom the carrier at the end of half a revolution thereof. At the sametime, another blank is inserted in the recess at the other side of thecarrier and the operation is continued. If the grinding wheel wears awayor it is necessary to substitute a new wheel, its position may beadjusted by means of the hand wheel 36, and if blanks of differentthicknesses are being treated, the elevationofthe bottom members inthecarrier and the consequent projection of the blanks into the path ofthe skiving mechanism may be controlled by adjusting the cams 130through their collars 132and 134. It will be understood that the machinemay be. adapted for blanks of difierent shapes by adjusting the lateralguides 52 and 54 of the magazine and the upper guides '20 cooperatingtherewith. Preferably, also, the presser head .62

will be changed to provide a presser head of shape corresponding to thatof the blank to be treated. This-change in the kind of work will alsonecessitate a removal of the kuadrants 10 0 and the substitution of newquadrants having suitably shaped recesses 102 and correspondingly shapedmatrix bottom members 104.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. In a machine of the character described,

a cylindrical grinding Wheel having an ex posed end surface, meanscomprising a matrix having beveled marginal portions for supporting ashoe stiffener, and means for pressing together and relativelytraversing the grinding wheel and the matrix in a substantially verticalplane, constructed and arranged to cause the grinding wheel to distortthe stiffener by pressing it into the matrix.

2. In a machine of the character described, a cup-sha ed grinding wheelrotatable about horizontal axis with its annular end surface exposed forthe presentation of work, a pair of rotatable carriers mounted upon axesparallel to the axis of the grinding wheel, said carriers having shoesti-lfener-supporting matrices having beveled marginal portions, saidcarriers being arranged to move shoe stiileners supported by saidmatrices in curvedpaths overlapping the annular face of the grindingwheel, and means for pressing the stifleners'between said matrices andsaid grinding wheel to distort the stiffeners according to the form ofsaid matrices.

3. In a machine of the character described, a skiving mechanism, acarrier rotatable about a horizontal axis, a magazine holding a stack ofshoe stilfeners, means for urging said stiifeners toward one end of themagazine, said carrier being rotatable to transfer astiifener from themagazine to the skiving mechanism, said carrier being constructed andarranged so that the, stiffener is not wholly released from the pressureof the stack until after it has come into engagement with the skivingmechanism.

4. In a machine of the character described, a grinding wheel rotatablymounted so that the end surface of the wheel is exposed, a

carrier rotatably mounted about an axis parallel to the axis of thegrinding wheel and having a recessed surface-opposed to and overlappingthe surface of the grinding wheel, a magazine for pressing a stackofshoe; stiifeners against the carrier, said carrier being constructed andarranged to remove one of the stifi'eners from the stack andprogressively to press the edges of said'stifl"- ener into engagementwith the grinding wheelas the carrier moves the stiffener across the endsurface of the grinding wheel.

5. In a. machine of the character described, means for supporting a shoestiffener in a vertical plane, supply means constructed and arranged todeliver a stiffener to said supporting means, rotatable means forskiving the margin of said stifiener operating in a plane parallel tothe plane of said supporting means, andmeans for relatively moving saidsupporting means and said skiving means to bring the margin ofjthestifl'ener into contact with the skiving means, said supply means andsaid skiving means cooperating with the supporting means to hold astiffener thereon.

6. In a machine of the character described, means for supporting a shoestifiener'comprising a plate provided with a matrix constructed andarranged so that the matrix is provided with a low marginal rim forholding the stiffener in the matrix, positive means for progressivelyvarying the depth of said rim,

a rotatable skiving mechanism operating in a plane parallel to the planeof said plate to skive the margin of the stiffener, and means forrelatively traversing the skiving mechanism and the matrix while thestiffener is held in the matrix by the co-aetion of the rim thereof withthe peripheral edge of the stiffener.

7. In a machine of the character described, means for supporting a shoestiffener comprising a recessed plate constructed and arranged so thatthe rim of said recess contacts with the peripheral edge of thestiffener, the bottom of said recess being shaped to provide a matrixfor lifting the edges of the stiffener, and a rotatable skivingmechanism operating in a plane parallel to the plane of said plate toskive the margin of the stiffener, said skiving mechanism being adaptedto press the central portion of the stiffener into said matrix.

8. In a machine of the character described, a skiving mechanismoperating in a zone within a plane, a shoe stiffener supportingmechanism for holding a shoe stiffener in a plane parallel to the planeof operation of the skiving mechanism, means for producing relatii emovement of said mechanisms to carry said stiffener in a curved pathoverlapping the zone of operation of the skiving mechanism, and positivemeans urging said stiffener toward the plane of operation of the skivingmechanism during said relative movement.

9. In a machine of the character described, a skiving mechanism, arotatable carrier for presenting shoe stiffeners to said mechanismprovided with a recess, a movable bottom for said recess, means forretracting the said bottom to allow the placing of a stiffener in therecess and for raising the bottom progressively to push the stiffenerpartially out of the recess into contact with the skiving mechanism asthe carrier moves the stiflener into cooperative relation with theskiving mechanism, and means for actuating the movable bottom to expelthe skived stiffener.

10. In a machine of the character described, a skiving mechanism, meansfor presenting shoe stifl'eners to said mechanism comprising a magazinefor holding a plurality of stifi'eners, a rotatable carrier providedwith a recess, a movable bottom for said recess, forming a matrix forthe stiffener-s constructed and arranged to relieve the pressure on thecentral portions thereof, means for retracting the bottom of the recesswhen it is adjacent to the magazine so as to receive a stiffener fromthe magazine, and means for raising the bottom of the recess to bringthe stiffener against the skiving mechanism as the carrier is rotated.

11. In a machine of the character described, a skiving mechanism, arotatable carrier for presenting shoe stiffeners to said mechanismprovided with a plurality of work holders, driving mechanism for saidcarrier arranged to rotate it intermittently to permit a counter to besupplied to each successive work holder and then to bring eachsuccessive work holder into operating position, comprising anintermediate shaft and a clutch, and means for controlling said clutchresponsive to the rotations of the intermediate shaft.

12. In a machine of the character described, a skiving mechanism, acarrier shaft, a rotatable carrier for presenting shoe stiffeners tosaid mechanism provided with a plurality of work holders, said carrierbeing mounted upon said carrier shaft, driving mechanism for saidcarrier shaft arranged to rotate it intermittently to permit a counterto be supplied to each successive work holder and then to bring eachsuccessive work holder into operating position, comprising anintermediate shaft and a clutch, and means independent of said clutchfor controlling said clutch responsive to the rotations of the carriershaft.

13. In a machine of the character described, a skiving mechanism, acarrier shaft, a rotatable carrier for presenting shoe stiffeners tosaid mechanism provided with a plurality of work holders, said carrierbeing mounted upon said carrier shaft, driving mechanism for saidcarrier shaft arranged to rotate it intermittently to permit a counterto be supplied to each successive work holder and then to bring eachsuccessive work holder into operating position, comprising anintermediate shaft and a clutch, and means for controlling said clutchresponsive to the rotations of both the intermediate shaft and thecarrier shaft.

14. In a machine of the character described, a skiving mechanism, acarrier shaft, a rotatable carrier for presenting shoe stiffeners tosaid mechanism provided with a plurality of work holders, said carrierbeing mounted upon said carrier shaft, driving mechanism for saidcarrier shaft arranged to rotate it intermittently to permit a counterto be supplied to each successive work holder and then to bring eachsuccessive work holder into operating position, comprising anintermediate shaft and a clutch, means responsive to the rotation of thecarrier shaft for disconnecting said clutch to interrupt the rotation ofthe carrier, and means responsive to the rotation of the intermediateshaft for again reconnect ing the clutch to continue the rotation of thecarrier.

15. In a machine of the character described, a skiving mechanism, acarrier shaft, a rotatable carrier for presenting shoe stiffeners tosaid mechanism provided with a plurality of work holders, said carrierbeing mounted upon said carrier shaft, driving mechanism for saidcarrier shaft arranged to rotate it intermittently to permit a counterto be supplied to each successive work holder and then to bring eachsuccessive work holder into operating position, comprising anintermediate shaft and a clutch, means responsive to the rotation of thecarrier shaft for disconnecting said clutch to interrupt the rotation ofthe carrier, and means responsive to the rotation of the intermediateshaft for again reconnecting the clutch to continue the rotation of thecarrier, the interval between the disconnection of the clutch and itsreconnection being substantially the time required for a revolution ofthe intermediate shaft.

16. In a machine of the character described,- a skiving mechanism, acarrier on a rotatable shaft for presenting shoe stiffeners to saidmechanism, means for rotating said carrier comprising an intermediateshaft provided with a clutch, means independent of said clutch andresponsive to the rotations of one of said shafts for disconnecting saidclutch and manually operable means for rendering said disconnectingmeans inoperative.

17. In a machine of the character described, a skiving mechanism, arotatable carrier for presenting shoe stiifeners to said mechanism,means for intermittently rotating said carrier comprising a clutch, andmanually operable means independent of said clutch for rendering saidclutch inoperative when it is desired to operate said rotating meansmanually.

18. In a machine of the character described, a skiving mechanism, acarrier shaft, a carrier mounted upon said shaft for presenting shoestiffeners to said skiving mechanism, an intermediate shaft, drivingconnections between said carrier shaft and said intermediate shaft forrotating said carrier shaft, driving means for said intermediate shaft,a clutch interposed between said intermediate shaft and said drivingmeans, and control means for said clutch responsive to the rotation ofsaid carrier shaft.

19. In a machine of the character described, a skiving mechanism, acarrier shaft,

a carrier mounted upon said shaft for present-ing shoe stilfeners tosaid skiving mechanism, an intermediate shaft, driving connectionsbetween said carrier shaft and said in termediate shaft for rotatingsaid carrier shaft, driving means for said intermediate shaft, a clutchinterposed between said intermediate shaft and said driving means, andcontrol means for said clutch responsive to said driving means.

20. In a machine of the character described, a skiving mechanism, acarrier shaft, a carrier mounted upon said shaft for presenting shoestifieners to said skiving mechanism, an intermediate shaft, drivingconnections between said carrier shaft and said intermediate shaft forrotating said carrier a skiving mechanism, a rotatable carrier forpresenting shoe stifl'eners to said skiving mechanism, driving mechanismfor rotating said carrier, said driving mechanism comprising an elementadapted to be driven from a source of power, a clutch interposed in saiddriving mechanism, and control means independent of said clutch andresponsive to said driving mechanism for actuating said clutch to renderthe rotation of said carrier intermittent.

22. In a machine of the class described, a skiving mechanism, arotatable carrier for presenting shoe stifieners to said skivingmechanism, driving mechanism for rotating said carrier, a clutchinterposed in said driving mechanism, and control means constructed andarranged to be responsive to the portion of said driving mechanismbetween said clutch and said carrier for actuating said clutch to renderthe rotation of said carrier intermittent.

23. In a machine of the class described, a. skiving mechanism, arotatable carrier for presenting shoe stiffeners to said skivingmechanism, driving mechanism for rotating said carrier, said drivingmechanism comprising a member adapted to be driven from a source ofpower, a clutch interposed in said driving mechanism, and control meansconstructed and arranged to be responsive to the portion of said drivingmechanism between said clutch and said power driven member for actuatingsaid clutch to render the rotation of said carrier intermittent.

24. In a machine of the class described, a skiving mechanism, arotatable carrier for presenting shoe stiffeners to said skivingmechanism, driving mechanism for rotating said carrier, a clutchinterposed in said driving mechanism, and control means constructed andarranged to be responsive to the respective portions of said drivingmechanism upon each side of said clutch for actuating said clutch torender the rotation of said carrier intermittent.

In testimony whereof I have signed my name to this specification.

HARRY HALLAM.

lUU

